April 18, 2014 Journal article Closed Access

de Paulis, Amato; Prevete, Nella; Fiorentino, Isabella; Rossi, Francesca Wanda; Staibano, Stefania; Montuori, Nunzia; Ragno, Pia; Longobardi, Amelia; Liccardo, Bianca; Genovese, Arturo; Ribatti, Domenico; Walls, Andrew F.; Marone, Gianni

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    <subfield code="a">Abstract
               Angiogenesis is a multistep complex phenomenon critical for several inflammatory and neoplastic disorders. Basophils, normally confined to peripheral blood, can infiltrate the sites of chronic inflammation. In an attempt to obtain insights into the mechanism(s) underlying human basophil chemotaxis and its role in inflammation, we have characterized the expression and function of vascular endothelial growth factors (VEGFs) and their receptors in these cells. Basophils express mRNA for three isoforms of VEGF-A (121, 165, and 189) and two isoforms of VEGF-B (167 and 186). Peripheral blood and basophils in nasal polyps contain VEGF-A localized in secretory granules. The concentration of VEGF-A in basophils was 144.4 ± 10.8 pg/106 cells. Immunologic activation of basophils induced the release of VEGF-A. VEGF-A (10–500 ng/ml) induced basophil chemotaxis. Supernatants of activated basophils induced an angiogenic response in the chick embryo chorioallantoic membrane that was inhibited by an anti-VEGF-A Ab. The tyrosine kinase VEGFR-2 (VEGFR-2/KDR) mRNA was expressed in basophils. These cells also expressed mRNA for the soluble form of VEGFR-1 and neuropilin (NRP)1 and NRP2. Flow cytometric analysis indicated that basophils express epitopes recognized by mAbs against the extracellular domains of VEGFR-2, NRP1, and NRP2. Our data suggest that basophils could play a role in angiogenesis and inflammation through the expression of several forms of VEGF and their receptors.</subfield>
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    <subfield code="a">Prevete, Nella</subfield>
    <subfield code="u">*Divisione di Immunologia Clinica ed Allergologia e Centro Interdipartimentale di Ricerca di Scienze Immunologiche di Base e Cliniche,</subfield>
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    <subfield code="a">Fiorentino, Isabella</subfield>
    <subfield code="u">*Divisione di Immunologia Clinica ed Allergologia e Centro Interdipartimentale di Ricerca di Scienze Immunologiche di Base e Cliniche,</subfield>
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    <subfield code="a">Rossi, Francesca Wanda</subfield>
    <subfield code="u">*Divisione di Immunologia Clinica ed Allergologia e Centro Interdipartimentale di Ricerca di Scienze Immunologiche di Base e Cliniche,</subfield>
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    <subfield code="a">Staibano, Stefania</subfield>
    <subfield code="u">†Dipartimento di Scienze Biomorfologiche e Funzionali–Sezione di Anatomia Patologica, and</subfield>
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    <subfield code="a">Montuori, Nunzia</subfield>
    <subfield code="u">‡Istituto di Endocrinologia ed Oncologia Sperimentale, Università di Napoli Federico II, Naples, Italy;</subfield>
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    <subfield code="a">Ragno, Pia</subfield>
    <subfield code="u">‡Istituto di Endocrinologia ed Oncologia Sperimentale, Università di Napoli Federico II, Naples, Italy;</subfield>
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    <subfield code="a">Longobardi, Amelia</subfield>
    <subfield code="u">*Divisione di Immunologia Clinica ed Allergologia e Centro Interdipartimentale di Ricerca di Scienze Immunologiche di Base e Cliniche,</subfield>
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    <subfield code="a">Liccardo, Bianca</subfield>
    <subfield code="u">*Divisione di Immunologia Clinica ed Allergologia e Centro Interdipartimentale di Ricerca di Scienze Immunologiche di Base e Cliniche,</subfield>
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    <subfield code="a">Genovese, Arturo</subfield>
    <subfield code="u">*Divisione di Immunologia Clinica ed Allergologia e Centro Interdipartimentale di Ricerca di Scienze Immunologiche di Base e Cliniche,</subfield>
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    <subfield code="a">Ribatti, Domenico</subfield>
    <subfield code="u">§Dipartimento di Anatomia Umana ed Istologia, Università di Bari, Bari, Italy; and</subfield>
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    <subfield code="a">Walls, Andrew F.</subfield>
    <subfield code="u">¶Immunopharmacology Group, Southampton General Hospital, Southampton, United Kingdom</subfield>
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    <subfield code="a">Marone, Gianni</subfield>
    <subfield code="u">*Divisione di Immunologia Clinica ed Allergologia e Centro Interdipartimentale di Ricerca di Scienze Immunologiche di Base e Cliniche,</subfield>
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    <subfield code="a">10.4049/jimmunol.177.10.7322</subfield>
    <subfield code="2">doi</subfield>
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    <subfield code="a">Immunology</subfield>
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    <subfield code="a">Immunology and Allergy</subfield>
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    <subfield code="a">de Paulis, Amato</subfield>
    <subfield code="u">*Divisione di Immunologia Clinica ed Allergologia e Centro Interdipartimentale di Ricerca di Scienze Immunologiche di Base e Cliniche,</subfield>
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    <subfield code="a">Expression and Functions of the Vascular Endothelial Growth Factors and Their Receptors in Human Basophils</subfield>
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    <subfield code="c">2014-04-18</subfield>
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